Wis. Stat. § 229.72: Issuance and negotiability of bonds.

(1m) Negotiability. All bonds are negotiable for all purposes, notwithstanding their payment from a limited source.

(2) Employment of financial consultant. A district may retain the building commission or any other person as its financial consultant to assist with and coordinate the issuance of bonds.

(6) Liability. Neither the members of the district board nor any person executing the bonds is liable personally on the bonds or subject to any personal liability or accountability by reason of the issuance of the bonds, unless the personal liability or accountability is the result of willful misconduct.